Dad: Son, what is a passphrase?

Son: Hi Dad,

The BIP39 standard supports an optional 25th word, a so-called passphrase. The passphrase encrypts the seed and creates a new wallet.

Dad: Son, do I have limitations? Size, or something?

Son: On the Coldcard hardware wallet for example, passphrases are limited to 100 characters in length. The on-screen interface supports ASCII characters only.

Dad: Okay, that is a powerful feature!

Son: So little effort and so much more security.

#Bitcoin